Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 296 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.What amount will ₹13700 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.A town has 18000 people. The population grows by 20% every year. What will the population be after 2 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹12200 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 53000 people. The population grows by 5% every year. What will the population be after 1 year?
6. 6.A scooter is worth ₹51100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹33100 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹36000 at 15% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
10. 10.A scooter is worth ₹28000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
11. 11.A scooter is worth ₹2700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
12. 12.A town has 11000 people. The population grows by 25% every year. What will the population be after 1 year?
13. 13.A scooter is worth ₹38700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹21000 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹31000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
17. 17.What amount will ₹35200 grow to in 2 years at 15% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹3800 at 20% per year for 2 years (in ₹)?
19. 19.A town has 20600 people. The population grows by 5% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹50000 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 7300 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹5200 grow to in 1 year at 25% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹45600 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹2000 grow to in 3 years at 10% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
30. 30.A town has 52500 people. The population grows by 4% every year. What will the population be after 2 years?
31. 31.What amount will ₹30200 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹42000 at 5% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹54500 at 20% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹24200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
37. 37.What amount will ₹56900 grow to in 1 year at 12% per year compound interest (in ₹)?
38. 38.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
39. 39.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?

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